Sustainable Chemistry and Quantum Technologies
We also consider divalent lanthanide complexes as starting materials to build large trivalent soluble assemblies that may be used as catalysts for selective P-S or P-O hydrolysis. These new clusters may also be used as precursors for forming nanomaterial containing lanthanides for various applications.
Xémard et al., Daton Trans, 2018, 47, 9226-9229
Over more than 50 years, intermediate valence states in lanthanide compounds have often resulted in unexpected or puzzling spectroscopic and magnetic properties. Such experimental singularities could not be rationalized until new theoretical models involving multiconfigurational electronic ground states were established. We gathered that the different singularities observed among lanthanide complexes are highlighted, the models used to rationalize them are detailed and how such electronic effects may be adjusted depending on energy and symmetry considerations is considered. Understanding and tuning the ground-state multiconfigurational behavior in lanthanide complexes may open new doors to modular and unusual reactivities.
Tricoire et al., Chem. Eur. J., 2021, 27, 6860-6878
The synthesis of f-element complexes constitutes the strength of our research group. We try to develop original synthetic paths for accessing new compounds of interest for catalysis, small molecule activation, and magnetism but also highly original compounds for their singular bonding nature. We are looking at low- and high-valent compounds, intermediate-valent states, and delta and phi-back bonding. For this topic, we received the support of the ANR (French research agency)
Low-valent lanthanide precursors are important in conceiving more elaborated compounds with designer ligands. We look for more simple salts of divalent lanthanides that would be stable enough and useful in further organometallic, coordination, and small molecule activation studies. For example, we have synthesized the Tm(OTf)2 salt and used it to start investigating its spectroscopy.
Xémard et al. Angew. Chem. Int. Ed., 2017, 54, 4266